The Los Angeles County Sheriff’s Department said it investigated the crash with the help of accident experts from the California Highway Patrol. Officers determined the 2005 Porsche that Rodas, 38 years old, was driving with Walker, 40, in the passenger seat, was traveling “between 80 and 93 miles per hour at the time the car impacted a power pole and several trees.” The posted speed limit was 45 mph.

In a report from the LA Sheriff’s office, police said investigators inspected the Porsche after the accident and found “no pre-existing conditions that would have caused this collision.” The report said the car had an aftermarket exhaust system that would have increased its horsepower and that its tires were “more than nine years old.”

In a statement, Porsche said it appreciated the “meticulous analysis” of police investigators and that “it is a sad day for us whenever anyone is injured in one of our cars, and this was a particularly tragic event.”

The German car maker also emphasized the report determined the accident was not due to flaws in the car’s design, as some critics had suggested following this and other crashes since the Carerra GT’s introduction. Porsche said “There is also evidence that this particular vehicle had been altered from its original design state and had not been maintained properly.”

The police report said there was no evidence of alcohol or drug use and that Rodas died of multiple traumatic injuries and Walker died of traumatic injuries and burns.

Following the death of Walker, who was in the middle of filming “Fast & Furious 7”, production of the film was halted. In December, nearly a month after the actor’s death, Universal Pictures moved the release date for the film back by nearly a year to April 10, 2015.

About Speakeasy

Speakeasy is a blog covering media, entertainment, celebrity and the arts. The publication is produced by Barbara Chai and Jonathan Welsh with contributions from the Wall Street Journal staff and others. Write to us at speakeasy@wsj.com or follow us on Twitter at @WSJSpeakeasy or individually @barbarachai.